US3290037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple orifice oleo-pneumatic shock/strut
Assignee: Lockheed Martin Corp
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Filing: 1964-11-13
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Granted: 1966-12-06
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Expires: 1984-11-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel W Robinson
- 👤 George K Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:34
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/32; B64C25/58; B64C25/60; F; F16; F16F; F16F9/00; F16F9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A TELESCOPING SHOCK ABSORBER STRUT FOR A VEHICLE COMPRISING: AN OUTER CYLINDER ADAPTED FOR ATTACHMENT TO A VEHICLE AND HAVING A CONCENTRIC INNER CYLINDER THEREIN CONTAINING AT LEAST ONE SIDEWALL APERTURE THERETHROUGH, SAID INNER AND OUTER CYLINDERS BEING CLOSED AT ONE END AND DEFINING AN ANNULAR AREA THEREBETWEEN; AN INTERMEDIATE CYLINDER FOR ATTACHMENT TO THE VEHICLE GROUND CONTACTING MEMBERS, SAID INTERMEDIATE CYLINDER BEING ASSOCIATED WITH SAID OUTER AND INNER CYLINDERS SO AS TO BE TELESCOPICALLY RECEIVED THEREBETWEEN AND MAKING SAID ANNULAR AREA AN ANNULAR CHAMBER; ORIFICED END CLOSURE MEANS ST THE OTHER END OF SAID INNER CYLINDER; A BULKHEAD LOCATED WITHIN SAID INNER CYLINDER DIVIDING SAID INNER CYLINDER INTO FIRST AND SECOND CHAMBERS WITH SAID INNER CYLINDER SIDEWALL APERTURE LOCATED IN THE SECOND CHAMBER INTERMEDIATE SAID BULKHEAD AND SAID END CLOSURE MEANS; AND A THIRD CHAMBER DEFINED BY SAID INNER CYLINDER END CLOSURE MEANS AND SAID INTERMEDIATE CYLINDER, SAID THIRD CHAMBER BEING FILLED WITH LIQUID WHEREUPON WHEN SAID INTERMEDIATE CYLINDER IS TELESCOPICALLY INSERTED INTO AN ANNULAR AREA AND LIQUID IN SAID THIRD CHAMBER IS FORCED THROUGH SAID ORIFICE INTO SAID SECOND CHAMBER AGAINST SAID BULKHEAD AND THROUGH SAID SIDEWALL APERTURE INTO SAID ANNULAR CHAMBER.
Claim 2
Dependent Claim
194 words
A TELESCOPING SHOCK ABSORBER STRUT FOR A VEHICLE COMPRISING: AN OUTER CYLINDER ADAPTED FOR ATTACHMENT TO A VEHICLE AND HAVING A CONCENTRIC INNER CYLINDER THEREIN CONTAINING AT LEAST ONE SIDEWALL APERTURE THERETHROUGH, SAID INNER AND OUTER CYLINDERS BEING CLOSED AT ONE END AND DEFINING AN ANNULAR AREA THEREBETWEEN; AN INTERMEDIATE CYLINDER FOR ATTACHMENT TO THE VEHICLE GROUND CONTACTING MEMBERS, SAID INTERMEDIATE CYLINDER BEING ASSOCIATED WITH SAID OUTER AND INNER CYLINDERS SO AS TO BE TELESCOPICALLY RECEIVED THEREBETWEEN AND MAKING SAID ANNULAR AREA AN ANNULAR CHAMBER; ORIFICED END CLOSURE MEANS ST THE OTHER END OF SAID INNER CYLINDER; A BULKHEAD LOCATED WITHIN SAID INNER CYLINDER DIVIDING SAID INNER CYLINDER INTO FIRST AND SECOND CHAMBERS WITH SAID INNER CYLINDER SIDEWALL APERTURE LOCATED IN THE SECOND CHAMBER INTERMEDIATE SAID BULKHEAD AND SAID END CLOSURE MEANS; AND A THIRD CHAMBER DEFINED BY SAID INNER CYLINDER END CLOSURE MEANS AND SAID INTERMEDIATE CYLINDER, SAID THIRD CHAMBER BEING FILLED WITH LIQUID WHEREUPON WHEN SAID INTERMEDIATE CYLINDER IS TELESCOPICALLY INSERTED INTO AN ANNULAR AREA AND LIQUID IN SAID THIRD CHAMBER IS FORCED THROUGH SAID ORIFICE INTO SAID SECOND CHAMBER AGAINST SAID BULKHEAD AND THROUGH SAID SIDEWALL APERTURE INTO SAID ANNULAR CHAMBER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |